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Mach 10 Hydrogen fuelled scramjet development. Safe and economic access to space is a major technological challenge of the 21st century. Airbreathing engines, in particular, scramjets offer the potential to meet this challenge. The project aims to develop an understanding of the engineering and physical principals that determines the performance of a class of scramjet operating at hypervelocity speeds (>3km/s). Novel and innovative ideas will be explored which for the first time will provide ....Mach 10 Hydrogen fuelled scramjet development. Safe and economic access to space is a major technological challenge of the 21st century. Airbreathing engines, in particular, scramjets offer the potential to meet this challenge. The project aims to develop an understanding of the engineering and physical principals that determines the performance of a class of scramjet operating at hypervelocity speeds (>3km/s). Novel and innovative ideas will be explored which for the first time will provide the understandings necessary to make well founded predictions of the cost effectiveness of this approach, as well as provide the blue print to develop an engine which can operate at Mach 10.Read moreRead less
Optimal nose shaping for delayed boundary-layer separation and transition in axisymmetric flow. The aim of this project is to design a smooth nose for a body of revolution placed in axisymmetric flow of a viscous fluid at high Reynolds number, such that the boundary layer on the body remains unseparated. This can always be done with a sufficiently long nose, but our objective here is to minimise the necessary nose length. Outer potential flows will be provided via ring sources. The potential flo ....Optimal nose shaping for delayed boundary-layer separation and transition in axisymmetric flow. The aim of this project is to design a smooth nose for a body of revolution placed in axisymmetric flow of a viscous fluid at high Reynolds number, such that the boundary layer on the body remains unseparated. This can always be done with a sufficiently long nose, but our objective here is to minimise the necessary nose length. Outer potential flows will be provided via ring sources. The potential flows will be used to determine inner boundary layer solutions. Transition-to-turbulence will be considered by undertaking 2D and 3D stability computations.Read moreRead less
Minimizing hypersonic skin-friction by boundary-layer combustion. The high drag associated with hypersonic flight has been a major obstacle to development of hypersonic aircraft. It is generally accepted that half the drag of hypersonic vehicles will be caused by air friction on the aircraft's skin, due mainly to the turbulent boundary layer which forms on the skin. However, a new method of reducing skin friction, by injecting and burning fuel in the boundary layer, has been discovered. This ....Minimizing hypersonic skin-friction by boundary-layer combustion. The high drag associated with hypersonic flight has been a major obstacle to development of hypersonic aircraft. It is generally accepted that half the drag of hypersonic vehicles will be caused by air friction on the aircraft's skin, due mainly to the turbulent boundary layer which forms on the skin. However, a new method of reducing skin friction, by injecting and burning fuel in the boundary layer, has been discovered. This project is aimed at investigating the range of conditions under which this method will be effective. By this boundary-layer "lubrication" much more efficient hypersonic flight will be possible.Read moreRead less
Active and Passive Techniques of Shock Wave/Boundary Layer Interaction Control. The shock wave/ boundary layer interaction (SBLI) is a formidable problem in high-speed aerodynamics. We investigate a novel method, using piezoelectric flap actuators to control the interaction. The aim is to participate in an experimental programme on SBLI control using longitudinal slots at The University of Cambridge's Engineering Department, a leading international institution for SBLI control. Their longitudina ....Active and Passive Techniques of Shock Wave/Boundary Layer Interaction Control. The shock wave/ boundary layer interaction (SBLI) is a formidable problem in high-speed aerodynamics. We investigate a novel method, using piezoelectric flap actuators to control the interaction. The aim is to participate in an experimental programme on SBLI control using longitudinal slots at The University of Cambridge's Engineering Department, a leading international institution for SBLI control. Their longitudinal slot control is very similar to unimorph control so that this research can be used to improve the understanding of unimorph control. Furthermore, their CFD program can validate our past work and allow theoretical optimisation to create a smart flap system.Read moreRead less
Enhancing scramjet performance by boundary layer combustion. Australia has developed a strong international reputation over the past 20 years for excellence in research into hypersonic flight technologies. This helps to reinforce the fact that this is a country in which advanced technologies can be conceived and developed. Australian companies and agencies are already collaborating with and are being supported by international organizations to develop further hypersonic flight technologies. Achi ....Enhancing scramjet performance by boundary layer combustion. Australia has developed a strong international reputation over the past 20 years for excellence in research into hypersonic flight technologies. This helps to reinforce the fact that this is a country in which advanced technologies can be conceived and developed. Australian companies and agencies are already collaborating with and are being supported by international organizations to develop further hypersonic flight technologies. Achieving another significant advance in this area by demonstrating significant reductions in frictional drag on hypersonic vehicles will keep us at the forefront of this field and lead to continued international support and collaboration.Read moreRead less